Method of slip-sheeting and means for practicing the same



Dec. 4, 1928. 1,693,886

H. CATON ET AL METHOD OF SLIPSHEETING AND MEANS FOR PRACTICING THE SAME Filed Oct- 21, 1927 2 Sheets$heet 1 .wyz.

NVENTORS ersche/ Cam/7 Eugene 60w.

ATTORNEY Dec. 4, 1928. 1,693,886 H. CATON ET AL METHOD OF SLIP SHEETING AND MEANS FOR PRACTICING THE SAME Filed Oct. 21, 1927 2 Sheets-Sheet 2 INVENTORS fier'sche/ 6020/7 [4296/76 Cmo/v L/ y 6 Howard ATTORNEY "45 freshly printed sheets prin Patented Dec. 4, 1928. 1

UNITED STATES PALTENT OFFICE.

HEBSCHEL CA'I'ON, F CITY, EUGENE CA'ION, OI BOSEDALN, KANSAS, LLOYD C. HOWARD, OF KANSAS CITY, MISSOURI, ASSIGNORS TO CATON PRINT- ING COMPANY, OF CITY, MISSOURI, A CORPORATION OF MISSOURI.

mac!) or sLrr-snnn'rmemn mus ron rnac'rrcme 'rn'n sum.

Application filed October :1, m7. Serial Io. 227,707.

Our invention relates to printing presses and more particularl to devices for conducting pa er into and t rough presses.

In t e printing art, the ink on a rinted sheet may ofiset on the back of the 0 owing sheet, and when offsetting is serious, slip sheets are interposed between printed sheets and succeeding sheets to receive possible olfset and protect the printed sheets. The slip 1 sheet paper is usually of a special character adapted to prevent smearing; and ordinarily must be placed b hand upon each printed sheet as it comes rom the press. The offset problem is more pronounced in connection with the use of roll-feed printing machines including rotary sheet printing presses that cutisheets from the roll of print paper before printing, where it is impracticable to insert slip sheets manually because of the speed of delivery: For example, in one class of roll-feed printing machines running at high speed, a pluralit of printed sheets may be assembled on a cy 'nder by the machine immediately upon coming from the impression cylinder or other cylinder, and delivered in lots to a shelf; suliicient time is available for depositing slip sheets manually between the said lots of printed sheets, but no facility has seemed available for installing slip sheets between the members composing said lots prior to assembly on the cylinder.

Further problems are involved when. the print paper is particularly fragile, or diflicult to handle because of other unusual characteristics, or because of ink or color printing factor. I

Ofisetting is particularly serious when the paper rinted is transparent or translucent, and otfdetinarks may show through the face of the sheet where pot obstructed by the printing, or may confuseor mar the efiectof printing.

' The principal. object of our invention,

therefore, is to associate sli sheets with on a roll-feed (press. A further object of the invention is to introduce an auxiliary strip into association 7 with print paper in a printing-apparatus,for supporting the print paper or for preventing oifset, and to deliver auxiliary sheets syn chronously with printed sheets.

A further and particular object of the invention is to introduce an auxiliary web into a machine'performiing a plurality of opera mint generally designated 23 and inc grippers such as 20, carries it into contact wit tions including severance on a principal web, and provide for conducting the auxiliary web and sheets cuttherefrom 1n association with said principal web and sheets cut therefrom and for delivering the auxiliary web sheets in companywith the-principal web sheets.

In accomplishing these and other objects of the invention we have provided a new and novel method, and improved details of structure for using the method, the referred forms of which are illustrated in t e aocom- F panying drawings, wherein:

Fig. 1 is a perspective view of a portion of a roll-feed printing press showing the means of feeding print paper thereto, severing the sheets, and delivering them. from the press, with which our slip-sheet, feeding device is combined, and whereby our method .of slipsheeting is illustrated.

Fig. 2 is an elevation of the machine, illustrating the method from a different point of view. g

Fig. 3 is a detail perspective view of the slip sheet roll-supporting element of our referred structure foiemploying the met 0d, the members partly disassembled. a

.Referring more in detail to the drawings: 1 designates generally a printing press comprising vertical frame members 2 and 3 upon which are journaled. a printing plate cylinder 4, an "impression cylinder 5 and a roll-supporting bracket element 6 in which a web roller shaft 7 is journaled. The web 8 is fed to the machine over a tension roller 9 supon a bracket 10, an idler 11 journaled in the frame, and feed rollers 12; the feed rollers delivering the web to a cutting shelf 13 where a blade 14 on a cutting cylinder 15 severs the web, the sheets proceeding over endless tape 16 supported in tension b p a plurality of rollers17 and being retained y tape 18 supported on rollers 19 to the impression cylinder 5, which grasps 'each sheet with the printing plate cylinder 4, and releases the sheet at a suitable position for v grasping of thesheet by the grippers 21 of a delivery cylinder 22.

The delivery cylinder ordinarily is adapted to receive a lurality of sheets, for example five sheets, om the impression cylinder "msuccession, and release and deliver the five shfilets in a single lotto an inclined jogfierdtzle- 1' u ng . fly sticks24, selected ones of which are prothrough the operating lever 30.

vided with shelf or stop members to receive the delivered sheets, the fly sticks fixed to a s ha'l't'26, journaled in the frame for rocking the fly sticks.

A rack hub 27 is provided on the shaft and a rack segment 28,. actuated under normal operation of a machine of this character, ro-

tates the shaft and rocks the fly sticks 24.

The fly sticks, rocking, deliver the pluralityof sheets that are assembled on the stop membersto a gathering table 29, returnin -after 1 delivery to position for receiving another lot as in ordinary practice.

Our invention-consists in the introduction 4 of a slip sheet into the 'means for carrying the print paper into and through the machine for delivery by the mechanism that normally delivers the printed sheets, and comprises preferably, as in the illustrated application of the invent-ion, the provision of an auxiliary or supplemental web 31 of slip sheet paper, supportingpaper, or other backing strip, suppliedonaroll 32 supported on a rotatable shaft 33 by journal block members 34 and 35 fixed on extension members 36 secured to the printing press frame. The roll-supporting members ma be of a conventional type and preferably include a disk 37 fixed to the shaft 33- and rotatably positioned in a journal member 38 comprising hingedrecessed halves clamped together for braking the rotatable shaft asdesired by a set screw 39, and. means for sup orting the journal member '38- adjacent t e block 34, and shifting the'shaft, and roll carried thereby, transversely of the press to adjust the slip sheet web totheweb ofprint paper. Said supporting and shifting means include retaining arms 40 fixed to the journal member halves projecting across the edges'of the journal recess, retain the disk, and a threaded auge pm 41 extending through the journal ement 34 ro- 'tatably, restrained from longitudinal move- 'Inent therethrou cated by a blocl i by means generally indi- 42, the inner end of the pin being threadedl engaged in an opening 43 .of the journal -b ock 34.

Paired brackets 44 are pivoted downwardly on the extension members 36 adjacent the ends thereof'and a tension roller 45 is rotatably carried in the ends of the brackets in bearing 4 members 46 adjustable lengthwise of the brackets b spring elements 47 for spacing the roller rom the extension support, and the web of the slip sheet passes over this roller.

slip sheet have been delivered to the joggfr,

. ous web of the slip sheet element may be carried over the tension roller and the guide roller and brought into relation with the web to be' rinted, assembled therewith over the idler 1 and fed into the feed rollers 12 for carriage through the printing press coincidentally with the Web to be printed.

In practicing our invention a printing press I of the roll-feed variety provided with a web to be-printed is assumed and the slip sheet roll supporting means provided. When the printing is to be done the end of the slip sheet is drawn from the roll over the tension and idler rollers into association with the web to be printed, and the two together are carried over the idler andinto the feed rollers. The press is started and the feed rollers deliver the two continuous strips of paper to the cutting platform and to the'guide tapesthat draw and conduct the paper towards the impression cylinder. The cutting cylinder operates to cut the web as usual and at the same time cuts the slip sheet web so that a slip sheet of the same length as the sheet to be printedis carried with and beneath the sheet to be printed to the impression cylinder, the two are grip ed by the grippers of said cylinder and carried thereby to the printingplate where the plate impresses the ink upon the sheet to be printed; the slip sheet constituting a backing therefor. The impressi'on cylindercarrles the two sheets together' to the delivery cylinder, the grippers of which gras them; the delivery cylinder collecting ap urality of pairs consisting of printed sheet and slip sheet and delivering the lotto the jog er. Each of the'printed sheets has upon its ack therefore, a slip sheet which protects its back from ink on the face 1 of an adjacent printed sheet. When five of the pairs comprising a printed sheet and a the fly sticks operate to deliver theassem ly to the athering table.

Whi e we have illustrated a roll-sup orting bracket and rollers for delivering t e slip sheet web tothe means carrying the print web for conduct thereof by said carrying means through the machine, the particular means of accomplishingthe result may be varied without-departure-from the spirit of our invention, and the steps maybe varied or reduced or their order changed for ap lication to a articular situation, for examp e, by providmg for the cutting of the web. after-the print paper has been printed.

What we claim and desire to secure by Letters Patent is:

-1. In combination with a roll-feed rinting press, meansfor conducting the we of the print roll to the press,'means for severing sheets from the print web, and means for deance 'o for delivering an auxiliarystrip relation with the'print strip for division into sheeting comprising in livering the severed and. printed sheets, a slip-sheet handlin device comprising'a support for a roll of s ip-s'heet paper, and means or delivering the web to said rint web conducting means for seversheets from the slip-sheet web by print sheet severing means and'carr'iage of slip sheets through the press and "delivery therefrom with said print web sheets by said print web sheet delivering means.

2. In combination with a roll-feed printing pre$ having means for cutting sheets from a print paper strip for printing, and means for delivering the printed sheets,'a slip-sheet handling device comprising means for delivering a slip sheet strip to said print paper cutting means for severance of slip sheets thereby for carriage by said printed sheet delivering means simultaneously-with the printed sheets.

3. In combination with means for feeding a print strip to a printing machine and means for dividing the print strip into sheets, means in slip-sheet sheets by said print strip-dividing means, and means for conducting said print and slip sheets through the printing machine simultaneously and in superim relation.

4. In the art of printing a strip, the method of slip-sheeting consisting of advancing a strip of slip-sheeting synchronously with the strip to be printed, cutting the stri s simultaneously, and delivering the cut eets together.

5. In the printing art, the method of slipucing a slip-sheet strip into the paper-ca members of a printing press m'company with the paper to.

*1,693,886.-Herechel C'aton,

. Howard, Kansas City,

' May 13,-1'933,"by the assignee,

of said slip-sheet roll DISCLAIMER Kansas City, Eugene Oaton,

METHOD or Patent dated December .4, 1928'. C'aton Printing Company.

be printed, cutting the strip into sheets, carrying the slip sheets through the press with the prlnt paper, and delivering the slip sheets with the printed'paper.

6, In the art of printing, the method of slip-sheeting the sheets printed by a roll-feed press comprising the feeding of a slip-sheet strip to the press, the severing of separate sheets from the strip by the press, the carriage of slip sheets by print sheet carrying means, and the delivery of a slip sheet 111 company with each printed sheet.

7. In the art of roll-feed printing, the method of slip-sheeting comprising introducing a slip-sheet webinto the print paper carrymg members, severing sheets from the web, carrying the slip sheets through the pre with the print paper, and delivering a slipshect with each printed sheet.

8. In the art of roll-feed printing, the method of slip-sheeting including provision of a roll of slip-sheet paper, carrying the slipsheet web, to the press the print paper, dividing the slip-sheet web into sheets, and delivering slip-sheets coincidently'with the printed sheets. i

9. In the printing art, the method of sup porting print paper including introducing an auxiliary str p into the paper-carrying members of a printing pre$ in company with the tures.

' HERSCHEL CATON.

EUGENE CATON. 1 1 LLOYD o. HOWARD.

Rosedale, Kans., and Lloyd SLIP-SHEETING AND Mums roa Disclaimer file Hereby enters the -following disclaimer in relation to said patent:

sliphheeting of all the unusual characteristics ofand particularly sheets exemplified phane and the hke, the handling of whi regarded lairgs o'f saidLetters Patent, any method the method defined in said'claims, except such prior 'to "the present invention, each and all of the those a ecification of the patent, the that are difficult to-handle because of when unrestrained,

and a tendency to curl Celloy the commercial article known as ch,'-through' automatic printing presses, was,

ts impraeticable; sand' from the seope of orineans of practicing as employed in the printingof transparent material difiicult to: handle and having aiten'dencyto curlif unrestrained.

{Oflicial Gazette June 13, 1933.1 I 

